Physics - King`s College School

King’s College School
Transfer Paper
Specimen
PHYSICS
This exam is 40 minutes long.
Answers should be written on the question paper.
Answer all questions.
Please fill in the following details
Name:………………………………………………………………………..
Form:…………………………………………………………………………
Please answer all questions.
King's College School
1
1. Underline the word, phrase or number which best completes each of the following
sentences.
(a) When they are brought close together, a north-seeking pole and a south-seeking pole
will
attract
have no effect
make a stronger pole
repel
(b) The most likely mass of a car is
10Kg
100Kg
1000Kg
10 000Kg
(c) On earth, the force of gravity on one kilogram is nearest
1N
10N
100N
1000N
joule
newton
ohm
(d) A unit of energy is the
Ampere
(e) An astronaut with a mass of 120Kg would have a weight of 96N if he were standing
on Pluto. This means that Pluto’s gravitational pull on each Kg is
0N
0.8N
1.25N
10N
(f) A tuning fork is struck and sounds like middle C. Another tuning fork, when struck,
sounds a note of higher pitch. Compared with the first tuning fork the vibrations of the
second tuning fork must be
bigger
of higher frequency
of lower frequency
smaller
(g) A car took 20 minutes to travel 16 Km. Its speed was
0.8Km/h
48Km/h
80Km/h
4800Km/h
hertz
pascals
(h) The frequency of sound is measured in
cm/s
decibels
(i) A spring stretches 8 cm when a 400g mass is hung from it. Three springs which are
identical to the first one are joined in series and a 200g mass is hung from the bottom
one. The total stretch in cm of this combination of three springs will be
4
12
24
48
(j) Thermal energy is transferred by convection
in gases and liquids
in gases only
in liquids only
in solids only
Maximum 10 marks
King's College School
2
2.
A rocket was fired above a seaside town to call out the lifeboat crew.
The rocket exploded, giving out light and sound at the same time.
(a)
Lisa was outside the town. She saw the flash of the rocket exploding and heard
the bang.
(i)
Which sentence is true?
Tick the correct box.
She heard the bang first.
She saw the flash first.
She heard the bang and saw the flash at the same time.
1 mark
(ii)
Give the reason for your answer.
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1 mark
(b)
Some people were nearer to the rocket than Lisa. How did the sound seem to
them?
Tick the correct box.
It was quieter.
It was louder.
It was higher pitched.
It was lower pitched.
1 mark
Maximum 3 marks
King's College School
3
3.
(a)
Draw a line from each electrical circuit to the correct circuit diagram.
Draw only four lines.
electrical circuit
circuit diagram
2 marks
King's College School
4
(b)
In each circuit below, bulb 1 breaks and goes off.
Under each circuit diagram below, tick the correct boxes to show if bulb 2 and
bulb 3 are on or off.
1
2
3
1
2
3
circuit A
on
circuit B
off
on
bulb 1
breaks
bulb 1
breaks
bulb 2
bulb 2
bulb 3
bulb 3
off
2 marks
(c)
Give the name of the part that provides energy for each circuit.
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1 mark
(d)
Why is copper used for wires in a circuit?
Tick the correct box.
Copper does not stick to
a magnet.
Copper is a good
conductor of electricity.
Copper is a brown metal.
Copper is a good
conductor of heat.
1 mark
maximum 6 marks
King's College School
5
4.
(a)
In 2002 a large asteroid was discovered orbiting the Sun.
It was named Quaoar.
The diagram below shows Quaoar in four positions in its orbit.
not to scale
(i)
In which of the four positions, A, B, C or D, is the effect of the Sun’s
gravity on Quaoar the greatest?
..............
Explain your answer.
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1 mark
(ii)
On the diagram above, draw arrows to show the direction of the
Sun’s gravity on Quaoar in each of the positions A, B, C and D.
1 mark
(iii)
At which position, A, B, C or D, is Quaoar travelling most slowly?
.............
Explain your answer.
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1 mark
King's College School
6
(b)
The table below gives information about three of the planets in our
solar system.
planet
average distance
from Sun
(millions of km)
time for one
orbit
(Earth years)
Average surface
temperature of planet
(ºC)
Saturn
1427
30
–180
Uranus
2870
84
–210
Pluto
5900
248
–230
(i)
The time for one orbit of the planet Neptune is 165 Earth years.
Estimate the average distance of Neptune from the Sun.
Use information in the table to help you.
......................... millions of km
1 mark
(ii)
How does the surface temperature of these planets vary with
distance from the Sun?
Use information in the table to help you.
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1 mark
(iii)
Explain why the temperature varies with distance from the Sun in
this way.
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1 mark
maximum 6 marks
King's College School
7
5.
The dotar is a musical instrument with two strings.
(a)
Aftal plays the dotar very quietly.
What must he do to the strings to make a louder sound?
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1 mark
(b)
Aftal makes the strings tighter so they vibrate more quickly.
How does this affect the sound produced by the strings?
Tick the correct box.
The sound has a lower pitch.
The sound is louder.
The sound has a higher pitch.
The sound is quieter.
1 mark
King's College School
8
(c)
One of the strings is thicker than the other, so it vibrates more slowly.
In what way is the sound made by the thicker string different from the sound
made by the thinner string?
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1 mark
(d)
Aftal played the dotar near a microphone connected to an oscilloscope.
The diagrams below show the patterns made by four sounds.
(i)
A
B
C
D
How does the sound shown in trace A differ from the sound in trace B?
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1 mark
(ii)
How does the sound shown in trace A differ from the sound in trace C?
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1 mark
maximum 5 marks
King's College School
9
6.
(a)
The diagram below shows a fish tank.
The surface of the water acts like a mirror.
The fish can see the snail reflected in the surface of the water.
surface
of water
(mirror)
Draw a ray of light which passes from the snail, and reflects from the surface, to
show how the fish can see the snail. Use a ruler.
Put arrows on the ray of light.
3 marks
King's College School
10
(b)
Andrew is looking at the snail.
Andrew
air
water
When a ray of light passes from water to air it changes direction.
(i)
Draw a ray of light from the snail to Andrew to show how Andrew can see
the snail. Use a ruler.
Put arrows on the ray of light.
(ii)
2 marks
What is the name given to this change in the direction of a ray of light?
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1 mark
maximum 6 marks
King's College School
11
7.
Mary used the apparatus below to test the strength of an electromagnet.
She used the reading on the newton meter to measure the force of the magnet on the
iron disc.
0
N
1
2
3
newton meter
4
5
iron disc
iron core fixed inside coil
power
supply
(a)
100 turns in coil
Explain why the reading on the newton meter increases when a current passes
through the coil.
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2 marks
(b)
When a current passes through the coil, some of the electrical energy is changed
to thermal energy.
What would happen to the coil if the current passing through it was too large?
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King's College School
2 marks
12
(c)
Mary made two electromagnets, one with 100 turns of wire in the coil and one
with 200 turns.
She varied the current through the coil of each electromagnet.
She measured the force of each electromagnet on the iron disc.
The graph shows her results.
200 turns
in coil
2.4
2.2
2.0
1.8
1.6
1.4
force on
iron disc 1.2
(N)
1.0
0.8
100 turns
in coil
0.6
0.4
0.2
0
0
0.5
1.0
1.5
2.0
2.5
3.0 3.5
4.0
4.5
5.0
5.5
current through coil (A)
Write two conclusions that Mary could make from these results.
1. ....................................................................................................................
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2. ....................................................................................................................
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2 marks
maximum 6 marks
King's College School
13
8.
The diagram shows a simple tool for punching holes in a leather belt.
steel peg
pivot
lightweight handle
piece of
leather
hole in base
base
force applied
not to scale
When the handle is pressed down, the steel peg presses down on the piece
of leather. If the force is large enough, the peg punches through the leather,
making a hole.
The diagram below shows the force applied to the handle.
pivot
10 cm
4 cm
steel peg
50 N
(a)
not to scale
Calculate the moment (turning effect) of the 50 N force applied to the
handle. Give the units.
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2 marks
(b)
This moment makes the steel peg press down on the leather. Calculate the force
with which the steel peg presses down on the leather.
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1 mark
King's College School
14
(c)
The next time the punch is used, the steel peg presses down on the leather
with a force of 150 N.
(i)
The area of the end of the steel peg is 0.1 cm2.
What is the pressure of the steel peg on the leather?
Give the units.
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1 mark
(ii)
The pressure is too small, and the punch does not go through the
leather. How could you change the design of the punch to make it
work using the same force on the handle?
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1 mark
Maximum 5 marks
9.
Describe the difference between mass and weight, illustrating your
description with an example.
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3 marks
Maximum 3 marks
King's College School
15
King's College School
16